# drift angle

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## drift angle

The angle measured in degrees between the heading of an aircraft or ship and the track made good.
References in periodicals archive ?
(ii) The safety limit of drift angle is obeyed to get light safe maneuvers of hovercraft moving with high velocities.
Caption: FIGURE 16: Maximum drift angle distribution for PGA = 0.4 g: (a) El Centro NS, (b) Taft EW, (c) Northridge EW, and (d) Kobe NS.
At 1% drift angle, bending cracks emerged in the end beam of N25 adjacent to the joint zone, and the column bottom exhibited lateral bending cracks.
By comparing Figure 5 (c) and elastic time history analysis and response spectrum method calculated interlayer displacement angle did not exceed the allowable value of drift angle of 1 / 800, can meet the requirements of specification and transform of seismic wave interlayer displacement angle value, the overall to response spectrum curve near.
When you've cut far enough to establish the drift angle, hold the board in position and transfer the angle to the saw's table (top photo below).
But given that this model was buckled in drift angle (rotation) of 0.03 radians, according to AISC Regulations it has no usability in especial moment frames, because one of the terms of especial buckling connections is that studied will not be declined before reaching the rotation angle of 0.04 radians.
Meanwhile, the drift angle is read by looking at the number of degrees on the slide under the dot as it differs from the course.
The fundamental parameter for investigation of seismic performance is the inter-storey drift angle. Basedon the data collected by photographic documentation, data logger, and direct observation, it was concluded that initiation and propagation of cracks were observed at the same storey shear force in all specimens.
And Figure 10(b) shows the cracks on the shear wall when the drift angle is 1/120 (that is a safety limit under severe earthquake according to Chinese seismic code).
where: L--ship length (maximum overall); B--ship width; [beta]--the drift angle of a ship while proceeding to the channel; [DELTA]K--the sway angle of the vessel along the course while heading through the channel; [b.sub.nav]--navigational margin depending on the aids of a navigation system, channel slope accuracy, etc.; P'--probabilistic maintenance factor in case the probability is 95% as accepted in navigation, thus P for channels is about 2; [[sigma].sub.y]--ship positioning accuracy in a way of the channel axis, e.g.
This value can be computed assuming the yielding value of the first storey drift angle conventionally equal to 0.004 rad, which approximately corresponds to a base shear equal to 40% of its maximum value, hence [mu] = 0.056/0.004 = 14.
This precision tool simultaneously records drift angle and magnetic direction of the hole.
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